UGC NET Reading Comp Q11

Question

Read the following passage carefully and answer given below the questions:
One of the findings of the research into successful leadership is the fact that respect is always a two way street. No matter how powerful you are, no matter what your experience, skills, and accomplishments, you will not be respected by others if you consistently treat them, disrespectfully. Friendliness that is, treating others politely and showing respect in them - is a way of showing your respect for other people, and in return, they respect you. If as a manager you are respected, your preventive maintenance strategy will be accepted as a sincere attempt to resolve problems rather than a mean - spirited attempt to cause problems.
As important as friendliness is, I want to make sure you are not mislead into believing that friendliness will replace or correct poor management. I have seen effective managers who didn't use this friendliness element but could have been more effective if they did use it. I have seen very friendly managers who were ineffective because they were not doing effective management things. In other words, managers who intervene effectively in a friendly way are always more effective than managers who intervene effectively in a non - friendly way. Maintaining a friendly relationship is another part of maintaining work performance. It also helps you avoid having people try to hurt you because they don't like you. It might save your life.
The central idea of the passage is: